Resources:
  Subnet1:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId:
        !Select [ 0, !GetAZs "" ]
      CidrBlock: 10.0.0.0/24
      AvailabilityZone:
        !Select [ '0', !GetAZs eu-west-2 ]
  Subnet2:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId:
        !Ref Subnet1
      CidrBlock: 10.0.0.0/24
      AvailabilityZone:
        !Select [ 0, !GetAZs eu-west-2 ]